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From: Max Laier <mlaier@FreeBSD.org>
Date: Sun, 19 Dec 2010 06:09:02 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/vm vm_map.c vm_map.h
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mlaier      2010-12-19 06:09:02 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/vm               vm_map.c vm_map.h 
  Log:
  SVN rev 216554 on 2010-12-19 06:09:02Z by mlaier
  
  MFC r216335:
    Fix a long standing (from the original 4.4BSD lite sources) race between
    vmspace_fork and vm_map_wire that would lead to "vm_fault_copy_wired: page
    missing" panics.  While faulting in pages for a map entry that is being
    wired down, mark the containing map as busy.  In vmspace_fork wait until
    the map is unbusy, before we try to copy the entries.
  
    Sponsored by: Isilon Systems, Inc.
  
  Approved by:    re (kib)
  
  Revision    Changes    Path
  1.388.2.14  +56 -1     src/sys/vm/vm_map.c
  1.120.2.3   +5 -0      src/sys/vm/vm_map.h